Comprehensive quantitative measurement of folate polyglutamates in human erythrocytes by ion pairing ultra-performance liquid chromatography/tandem mass spectrometry.
van Haandel L, Becker ML, Williams TD, Stobaugh JF, Leeder JS. Comprehensive quantitative measurement of folate polyglutamates in human erythrocytes by ion pairing ultra-performance liquid chromatography/tandem mass spectrometry. Rapid Commun Mass Spectrom. 2012 Jul 30; 26(14):1617-30.